Method and apparatus for glazing circuitous passages



A. E. HOCH METHOD AND APPARATUS FOR GLAZING CIRGUITOUS PASSAGES Flled June 8 1944 Aug. 17, 1948.

Patented Aug. 11,1943 I 2,447,337

METHOD AND APPARATUS: FOR GLAZI NG.

, CIRCUITOUS BASS-AGES Arthur E; Hoch, Trenton, N. 3., essigaoi't o n 00., Chicago, 111., a corporation of Illinois 1 Application June 8, 1944,;s'eri'ai-No.5393c This invention relates to a method and apparaoutletend 121 ,r' at v'ely thick-w alle d, resilient tus for applying glaze to ceramic products and rubbertubir'igm r Isi secu d tq an' m t; is more particularly concerned with an improved ing-arm 14 fonmove'mentl 'intoandi out: or air tight sealing engagement with the outlet end I? of the trapway, 'ass' ge,fand leadstofa discharge portion thereof formed of method. and apparatus for applying glaze to the walls 'ofcloset trapways. I I H "The method heretofore employed for applying conduit lehavm glaze to closet trapways consists inpouring a flexible ubing." [I ,to' permit movementfof the supply ofglaze into the closet bowl and then actuating'armi j'lh ct ia'ti'ng'arm 'is'fpivotally manually rotating the closet to cause the glaze mounted'ona brac en'iber l8 and is normally to flow through the trapway. It is apparent that 1 moved vupwardlygb 'y means ,of a; spring I9 which this old method requiredcohsiderable manual efserves to maintain. theftubin'gfmember I13 inti'ght fort as closets are quite heavy, and further that sealing engagementfwitli th utlet vend ofthe this method does not necessarily providethortrapway passage." The v at g'ar'in iis,moyed ough nor complete wall coverage as it is dependflown r an anyb stepp ng uponthe erid portion ent upon the haphazard manner in which the 2T'th'e'ro'f. closet may be rotated. In the application of The conduit I 6 leads to an air and glaze sepaglaze to trapway surfaces of single fired closets rating device 22 which may be of any suitable as received from the drying room in their clay construction. A valve 23 is interposed in the state, many closets were heretofore broken in conduit I6 to control the flow therethrough. An handling due to their weight and relatively air conduit 24 is provided to direct air from the fragile condition. separating device 22 to a vacuum tank 26 from This invention, therefore, has for an object the which air is exhausted by means of a pump 21. provision of a method and apparatus to facilitate A glaze conduit 28 leads from the separating dethe application of glaze to the walls defining the vice 22 to a glaze supply tank 29, and a pump 30 'panying drawing, forming part thereof, wherein: 45

closet trapways and to decrease the length of is interposed in said conduit to force the glaze time required to perform this operation. therethrough. A conduit 3| is provided to direct It is a further object of this invention to proa flow of glaze from the glaze supply tank to the vide a method and apparatus for applying glaze closet bowl 8, preferably by gravity, and under to closet trapways without manual manipulation control of a valve 32. o A conduit 33 is provided of the closet and to thereby dispense with the I to direct a flow of glaze from the closet bowl 8 manual labor and also eliminate a frequent cause to the separating device 22 under control of a for excessive breakage. valve 34. The closet engaging ends of the con- Another object of this invention is to provide duits 3| and 33 are preferably formed of flexible a method and apparatus which is adapted to inrubber tubing at 36 and 31, respectively. sure the complete and adequate coating of the In the operation of the apparatus thus deentire wall surfaces of closet trapways. scribed, glaze is supplied to the closet bowl to the This invention further contempl t s the p level indicated by the dotted line 38 by operatvision of a la in app ratus w ich is si in ing the control valve 32 in the conduit 3|. The f jt inexpensive in construction and valve 23 is'then opened'to permit a difference in whlch W111 readily g out of 40 air pressures at opposite ends of the trapway This invention embodies other novel features, passag e when the pressure Within the details of construction and arrangement of parts which are hereinafter set forth in the specification and claims and illustrated in the accomvacuum tank 26 and separator 22 is substantially below atmospheric pressure, it causes the glaze to flow in a turbulent manner and at relatively The single figure in the drawing illustrates a hlgh Velocity from. the bowl and through the preferred f f apparatus for applying glaze trapway passage to thoroughly coat the walls t d t tyapway, thereof. A small amount of glaze remains in the Referring now to the drawing for a better unbowl at h completion o he Coating Op ration derstanding of this invention, the apparatus is and is removed therefrom by means of the conshown comprising a conveyor line 6 for moving duits 33 and31.

closets I from a drying room (not shown) to a While this invention has been shown in but glazing station, The closets are formed with one form it is obvious to those skilled in the artthe usual bowl portion 8 communicating with a that it is not so limited but is susceptible of varitrapway passage 9 having an inlet end II and an ous changes and modifications without departihg from the spirit thereof or the appended claims.

I claim:

1. An apparatus for applying glaze to the wall surface of a closet trapway having open ends, comprising a tank containing air below atmospheric pressure, conduit means communicating with saidftaxi-k for directing gl'az'e from one end of th closet trapway, valve means interposed in said conduit means for controlling the air prestherethrough, means for supply mgzig'laze 'toth'e other end of the closet trapway, andp'ivotall-y movable means for detachably connecting said conduit means to one end ofthecloset trapway.

2. An apparatus for applying glaze to the wall surface of a closet trapway having-open ends, comprising a tank containing air below atmospheric pressure, conduit means communicating with said tank for directing glaze from one end bifthe e oset'trapwat, valve 'means 'i'riterpo'sedin said conduit means ro eontrpnmg the air pressure "within said trapwwy and the "now or glaze fther hrou'gh, "meansffor "supplying glaze to the other end of the closet trapway, movable mountnag means in tnenmt trapway and resilient jrjnjeans cooperating withthe'said movable mount= g jrneans rornetafcn abiy connecting said c'ondu'itfto "b'n'e Tend t the "closet ftrapway.

1 '3. The metrro'd prapplymg a'liqui'd'glaze to the Wall sou-races! a'cl'o'set trapwayhaving'open 'e'nds which consistmnispqsmg a quantity 'of'the liquid aze within pne'end portion of the passage to serve "as an "air seal, then "effecting "a jdifieren'ce 10 sure within said trapway and the flow of glaze 4 in air pressures at opposite ends of the tra'pw'ay to cause a partially projected now of the liquid glaze therethrough and then subsequently removing the remaining liquid glaze from the end of the passage serving as an air seal.

4. The method of applying a liquid glaze to the wall surface of a closet trapway having open ends which consists in disposing a quantity of liquid glaze within a trapway portion of one end -of the passage to form an air seal therefor, then suddenly reducing the air pressure within the trapway to.*eifect movement of the liquid glaze "'there'th'rbugh at relatively high velocity to in- 'Name Date 1,621,016 Jackson Mar. 15, 1927 1,826,301 Chappell Oct- 6, 1931 2,067,922 Hothersall Jan. 19, 1937 2,281,024. Gasell-ini vJune 23, .1942 2,331,824 Buckingham Y Oct. 12,v l94'3 fFOREIGN PATENTS Number Country Date I 29,389/30 Australia Nov. 12, 1931 

